At a dilapidated playground, people have stolen the support bar to a merry-go-ro

Question

At a dilapidated playground, people have stolen the support bar to a merry-go-round leaving a flat disk that can rotate freely. While pondering conservation of angular momentum, a curious physics student wonders if he left his physics book on the ground and jumped onto the merry-go-round, and started walking, will he ever move away from the physics book, assume he is less than half its mass?

a. No, the merry-go-round will have angular momentum in one direction and he in the other, they will cancel and he

Explanation / Answer

no,

the merry go round will have angular momentum in on edirection

and he in the other

they will cancel and he will stay right above the book

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